Most observatories plan their upcoming observations at least several weeks in advance. There are discussions ongoing to have such planning data published not only via Web pages, as currently, but also in a form that could be easily parsed by software.
Once that were available it would be interesting, especially for multi-wavelength campaigns to have a time-filtered view of theoretical footprints from observatories participicating in such a scheme. Note that this might require a generalisation as it is not clear yet how detailed such planning data would be, when published (e.g., does it precise the spacecraft rotation?).
This is a long-term idea, for the time when such interfaces exist.
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